{equations} is about the various environments to typeset displaystyle mathematics, e.g. equation and {align}. For general questions about mathematical typesetting use {math-mode}. Both tags are possible on the same question.

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Using the same number for repeated use of the same equation

I'm a LyX beginner so please don't worry about stating the obvious. I'm numbering equations by section in my document. That's working fine. However, when I refer to the same equation later on in the ...
9
votes
2answers
1k views

autoref and braces around equation number

I am writing an article for a journal with AMS math equation style, e.g. "Eq. (1)". I want to hyperref the entire "Eq. (1)" and not merely the "1". Currently I use ...
7
votes
1answer
717 views

numbering parentequation of subequations

I would like to change the numbering of the parent equation of the subequations. \begin{subequations} \label{eq:Parent} \begin{align} a& \label{eq:1}\\ b& \label{eq:2} \end{align} ...
7
votes
1answer
2k views

Can I make footnote inside an equation?

Can I make a footnote to clarify an important point inside an equation?
7
votes
1answer
1k views

Different space between \align and \equation

Why produce the align and the equation environment different space between the text. And what can I do, that it have the same? \documentclass{article} \usepackage{amsmath} \begin{document} Long ...
6
votes
1answer
8k views

Different spacing around equation and align

In my document, I use align and equation, depending on the length of the equation. They are spaced differently, as you can see on the picture below. I read that comments in the empty lines would ...
5
votes
1answer
373 views

Set a minimum space above and below displayed math

NOTE: This question is specifically about adding vertical space that increases to compensate for tall symbols. Thus, it is not a duplicate of How can I change the whitespace above and below math ...
4
votes
2answers
481 views

How can I add size of Tikz drawing into size of equation?

This is slightly modified code from Frédéric's answer to How can I add clips above matrix? \documentclass{mwrep} \usepackage{amsmath} \usepackage{tikz} ...
3
votes
1answer
8k views

How to stop LaTex numbering equations within section [duplicate]

\documentclass[]{phstyle} \usepackage{latexsym,amsfonts,amssymb, undertilde} \usepackage[fleqn]{amsmath} \usepackage{makeidx} %Preamble \numberwithin{equation}{chapter} ...
1
vote
2answers
1k views

Linebreak in equations

I have a very simple LaTeX problem with the following LaTeX fragment: The function computes: \[ e \leftarrow (((x||a) + (y||b)) \oplus y,\\ r \leftarrow x + y \] The result should then be in ...
11
votes
1answer
449 views

What would be the appropriate technique for typesetting a “where” list of variable specifications after an equation?

I'm often finding I need to lay out an equation in a manner resembling the following source: \begin{align*} x = y + z \end{align*} where $y = $ the value of $y$; $z = $ the value of $z$. ...
11
votes
3answers
4k views

Why doesn't lineno number a paragraph when it is followed by an indented equation?

While searching for the source of missing line numbers, I realized that paragraphs followed immediately by an equation have no line number, but this is fixed when a space is included, e.g. the ...
9
votes
2answers
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Smartly omit chapter number in equation numbering

In my thesis I use chapters, sections and subsection. I like to have my equations numbered with respect to section, but I want the displayed equations numbers not to include the chapter number. ...
9
votes
1answer
8k views

Systems of equations with a single number

I want to write a numbered system of equations. Right now, this is what I do and I am satisfied with the output, but I have a feeling it's not the best way to do it. \begin{equation} ...
9
votes
1answer
2k views

How can I an place a figure next to an equation?

I'm new to LaTeX. This is my first script, an exercise. I'm try to place a 4 figures (SCfigure) I already charted with KmPlot next to its correspondent equations, but they always appear on the next ...
9
votes
5answers
4k views

How to subtract two equations?

I am trying to subtract one equation from another but I can't get it to display the way that I want. This is what I have right now. \begin{align*} &y&=2x+5\\ -&&\\ ...
9
votes
1answer
4k views

How can I add numbers to specific equations in an eqnarray*?

I know how to use \nonumber or \notag in \begin{eqnarray} \end{eqnarray} environment. But is there something like \addnumber or \addtag in \begin{eqnarray*} \end{eqnarray*} environment ? For ...
9
votes
2answers
4k views

What are the Open source WYSIWYG Independent Web Equation Editors available on LaTeX/MathML

I am looking for a solution of an Equation Editor to be added to my site. The equation editor should be open source, WYSIWYG (users should be able to type out Equations as if in MS Equation Editor or ...
8
votes
2answers
667 views

Equation number with an apostrophe

I am writing two equations in an align environment: \begin{align} x^2+y^2=z^2, \\ x^2=7, \end{align} I would like the first equation to be labelled with e.g. (1.1) and the second equation to be ...
8
votes
6answers
4k views

Setting a single equation in a paragraph in a smaller font

I'm trying to figure out the best way of making a single equation just a little bit smaller. Of course, I could try and break up the equation into pieces and proceed that way, but I'd like to ...
8
votes
1answer
2k views

How to make all math equations bold by default?

I am using the bm package which provides the \bm command to boldify equations. However, all my equations need to be bold, and I find using the \bm command tedious. Is there a way to make the ...
7
votes
2answers
599 views

Equation numbering in square brackets [duplicate]

Does anyone knows how can I use square brackets instead of parenthesis when numbering my equations? I used this command: \begin{equation} y = 2x \end{equation} The number appears on the right ...
7
votes
1answer
5k views

! You can't use `\eqno' in math mode

what is wrong with this??? please,can anyone help? \begin{equation} \label{probabilityy} P^{t}({E_{0})=P_{0}+(1-P_{0})P_{1}+ (1-P_{0})(1-P_{1})P_{2}+.......+P_{n}\Pi_{k_{0}}^{n-1}(1-P_{k}) ...
7
votes
1answer
832 views

nested equations numbering

Is there a way of playing with align, alignat, numcases etc environments that produces aligned and numbered equations which look like this : Blahblah text before equations : A = B \iff C = D ...
7
votes
2answers
2k views

How to number equations within theorem-like environments

I want to enumerate equations within theorem-like environments. Example: \documentclass[a4paper,10pt]{article} \usepackage{amsmath,amsthm} \newtheorem{theo}{Theorem}[section] % \begin{document} ...
7
votes
2answers
823 views

Excess vertical space in mdframed ending with display math environment

When the mdframed environment ends with an align there is excess vertical spacing at the bottom. I would like to adjust the MyBoxedEnvironment environment such that the vertical space at the bottom ...
6
votes
2answers
2k views

Number of Equation: 1, 1a, 1b

Following Problem: I have a PDE and two boundary conditions what i actually want is: PDE (1) BC1 (1a) BC2 (1b) and what i have is: PDE (1) BC1 (2a) BC2 (2b) is there something which provides a ...
6
votes
3answers
9k views

Fitting unbreakable large equation on one line in a twocolumn layout

I have an equation in my document which is unbreakable and does not fit on one line using the twocolumn global option. Am I forced to shrink the text size here? And how do I go about doing it? ...
6
votes
1answer
266 views

Labeling Multiple Equations Per Row of a Table

I am trying to create a table with two columns of independently labelled equations (1-6). Unfortunately, everything I have found so far either has not worked or would number them as sub-equations (1a, ...
6
votes
2answers
5k views

Break Large Equation Between Parenthesis Using Multline

I have a very large equation that I need to write in multiple lines, but multiline is not working between parenthesis. This is my LaTeX code: \begin{multline} e^{-y \lambda_n} \left( ...
6
votes
2answers
1k views

Modifying \everydisplay causes the align* environment to stop working

I want all displayed mathematics in my document to be typeset in the style of inline mathematics. In his answer to this question, Matthew Leingang explains how to do the opposite (typeset all inline ...
4
votes
2answers
211 views

Custom cross-reference formats (e.g. “Equation 1” instead of just “1”) [duplicate]

I have an equation system set up as below. When I reference it however, ie. with \ref{eqn:surfacetension}, it only prints the number '1', and not 'Equation 1'. How can I modify the code to do that? I ...
4
votes
1answer
232 views

Add \par only if last paragraph did not end with displayed math

Background: I have named "sections" (sections for rest of this question) which are conditionally displayed or suppressed based on parameters. To simplify the test case below, these are controlled by ...
4
votes
2answers
8k views

Sub-numbering equations within array

I'm using the array environment to give multiple definitions of some value, let's call it x. I can easily get a reference to all 3 definitions together, but I want each one to have its own reference. ...
4
votes
2answers
331 views

Problem with equation format when starting equation with \dot and \ddot

I am having problems with equation formatting inside the equation environment when the equations begin with \dot or \ddot When I write: \begin{equation} \ddot{\theta} + \frac{g}{l}\sin(\theta) ...
3
votes
2answers
1k views

Align equations inside tabular

How can I align equations inside tabular? I want to place few lines of equation by side of the picture. But it turns out that I cannot use \& in order to shift equals signs to be one under ...
3
votes
1answer
760 views

Editing TeXnicCenter source code for {align}

Is there a simple way to change the TeXnicCenter source code so that the equation array button pops out:- \begin{align*} \end{align*} instead of \begin{align} \end{align} Only I find I ...
2
votes
1answer
105 views

What is the best way to automatically replace $$ … $$ by \[ … \] in multiple files? [duplicate]

Thanks to this great site I've learned that in LaTeX one should always use \[...\] pair for equations typesetting instead of $$...$$. Unfortunately it is too late: I already have a big text with this ...
2
votes
1answer
12k views

Exemple block and equations (Beamer) [closed]

I got an error with the exempleblock environment: \documentclass{beamer} \usetheme{PaloAlto} \begin{document} \begin{frame}\frametitle{Title} \begin{exampleblock} \[ t = ...
2
votes
3answers
11k views

how to insert multi line equation in the tabular environment?

How can insert multi line equation in the tabular environment? For example see the following code that can show my request. \begin{tabular}{rrr} &a &b\\ &u=\begin{cases} 0;& ...
1
vote
1answer
2k views

missing $ inserted error for equation

I get the missing $ inserted error for the following code: \begin{equation} C = $ \frac{2}{\omega^2N^2\mu\pia} $ \end{equation} I have tried out different changes based on Googling for this ...
11
votes
1answer
487 views

Text in an equation

This is best explained by example. Suppose I have the following: \[ \begin{align*} C_3 \rightarrow 6 automorphisms\\ C_4 \rightarrow 8 automorphisms\\ C_5 \rightarrow 10 automorphisms ...
10
votes
4answers
403 views

Depth and height confusion

I create two equations: $x \notin \mathbb{N}$; and $x \in \mathbb{N}$. As it turns out, both have the same depth value: Depth = 0.39098pt Height = 7.5pt Depth = 0.39098pt Height = 6.88889pt ...
10
votes
2answers
3k views

How to format Maxwell equations?

Is there a variant of split environment from amsmath package which would allow for two aligned equations in a row? I want to format two pairs of Maxwell equations in two rows and put single equation ...
10
votes
1answer
13k views

aligning split equation

I am new to Latex ;) I split my equation like this: \begin{equation} \begin{split} \tilde{m}=P\tilde{M} \\ \quad = K(R^1R^2R^3t) \begin{pmatrix} X \\ Y \\ 0 \\ 1 \end{pmatrix} \\ \quad= ...
9
votes
2answers
995 views

A large amount of text below the sum or product sign

I want some advice about how to format it better if I have to write a long text below a $\sum$ or a $\prod$ sign. Basically I want to explain the restriction over which the sum or the product is being ...
8
votes
2answers
311 views

How to align multiple symbols for a long equation?

\documentclass[11pt]{article} \usepackage{xfrac, array, tabu, multirow, graphicx, setspace, dcolumn, tikz} \usepackage[fleqn]{mathtools} %the argument for d specifies the maximum number of decimal ...
8
votes
2answers
940 views

Equation with Large Matrix Dimension

I'm trying to code this matrix equation below, I'm not an expert in latex, but I've been successful dealing with other matrix equations. However with this one, I can't achieve it. The alignment of ...
8
votes
2answers
3k views

Underlining an equation in an align block

I'm trying to set up a system of equations and want to underline the last equation, but can't figure it out. Here's what I have: \begin{alignat*}{4} &F_n &- mg &- F_a\sin 32^\circ &= ...
8
votes
3answers
4k views

How to split optimisation problem over two lines?

I have this expression involving minimisation. How do I split it over two lines? The problem is \min seems to be separated from the objective function. breqn does not seem to work, as this is not an ...